Spiral binder



FIG. 1 is a perspective view of a spiral binder showing my new design;

FIG. 2 is a top view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a back elevation view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a side elevation view thereof; and,

FIG. 7 is a side elevational view of the other side thereof. 

The ornamental design for a spiral binder, as shown. 